The checked-in .sln files are VS2005 and don't build in VS2008 without manual conversion; I don't intend to change that. However, a few of the scripts in WebKitTools/Scripts can be very simply modified to support both VS2005 and VS2008, for developers with VS2008 who want to try converting things locally.
Created attachment 34582 [details]
Fix two scripts
I think this even makes webkitdirs.pm simpler.
Fixed in r47045.